Compression Resilience Research Articles

Flexible and Compressible Nanostructure-Assembled Aramid Nanofiber/Silica Composites Aerogel.

The Applications of silica aerogel are limited due to its brittleness and low strength. As a result, it is essential to strengthen and toughen it. Organic nanofibers are one of the preferred reinforcement materials. In this work, we designed and fabricated flexible and compressible nanostructure-assembled aramid nanofiber/silica composites aerogel (ANF/SiO2 aerogel) to improve the mechanical strength and flexibility of silica aerogel without compromising thermal insulation properties. The aramid nanofiber/silica composite aerogels were prepared by immersing the aramid nanofiber wet gel into the silica sol for a certain period of time followed by freeze drying without solvent replacement. The surface modifier 3-aminopropyltriethoxysilane (APTES) was used as a coupling agent to form chemical linkage between the ANF fiber and silica gel. It was observed that APTES can effectively drive the silica sol to infuse into ANF hydrogel, promoting the assembly of silica gel onto the fiber surface and a uniform distribution in the network of ANF. The compressive resilience, thermal stability, and thermal insulation properties of the composite aerogels were evaluated by inducing the silica aerogel into the ANF network to form a protective layer on the fiber and change the pore structure in the ANF network.

Developing excellent plantar pressure sensors for monitoring human motions by using highly compressible and resilient PMMA conductive iongels

Based on real-time detection of plantar pressure, gait recognition could provide important health information for rehabilitation administration, fatigue prevention, and sports training assessment. So far, such researches are extremely limited due to lacking of reliable, stable and comfortable plantar pressure sensors. Herein, a strategy for preparing high compression strength and resilience conductive iongels has been proposed by implanting physically entangled polymer chains with covalently cross-linked networks. The resulting iongels have excellent mechanical properties including nice compliance (young’s modulus < 300 kPa), high compression strength (>10 MPa at a strain of 90 %), and good resilience (self-recovery within seconds). And capacitive pressure sensor composed by them possesses excellent sensitivity, good linear response even under very small stress (∼kPa), and long-term durability (cycles > 100,000) under high-stress conditions (133 kPa). Then, capacitive pressure sensor arrays have been prepared for high-precision detection of plantar pressure spatial distribution, which also exhibit excellent sensing performances and long-term stability. Further, an extremely sensitive and fast response plantar pressure monitoring system has been designed for monitoring plantar pressure of foot at different postures including upright, forward and backward. The system achieves real-time tracking and monitoring of changes of plantar pressure during different static and dynamic posture processes. And the characteristics of plantar pressure information can be digitally and photography displayed. Finally, we propose an intelligent framework for real-time detection of plantar pressure by combining electronic insoles with data analysis system, which presents excellent applications in sport trainings and safety precautions.

Compressible thermoplastic polyurethane/silver nanorod foams for absorption dominant electromagnetic interference shielding

Conductive polymer composites (CPCs) have attracted significant interest in the field of flexible electromagnetic protection, but the challenge of balancing high electromagnetic interference shielding effectiveness (EMI SE) and low reflection losses still exists. Herein, thermoplastic polyurethane/silver nanorod (TPU/AgNR) composite foams have been successfully prepared using both the salt template and vacuum-assisted thermal compression methods. By varying the AgNRs content and employing a layer-by-layer bonding approach, a gradient structure with optimized impedance matching is achieved. The “absorb-reflect-reabsorb” EM attenuation mechanism of the asymmetric gradient EMI shielding in the internal structure is exploited, resulting in TPU/AgNR foam (TAF) with high EMI SE and significantly reduced EM reflection. Notably, the three-layer foams exhibit an average shielding efficacy of 35.5 dB and a reflected power coefficient (R) of 0.085 in the X-band, thereby substantially mitigating secondary EM wave reflections. Furthermore, these foams demonstrate exemplary compressive resilience, with the sample maintaining excellent EMI shielding stability even after undergoing 100 compression cycles at 50 % strain. Consequently, a straightforward approach is employed to fabricate materials with high EMI SE and low reflectivity, offering the potential for use in EM shielding applications of next-generation flexible electronic devices.

Fast Solution Blow Spinning of Lotus-Leaf-Inspired SiO2 Nanofiber Sponge for High Efficiency Purification.

Massive production of SiO2 nanofibers with both high durability and exceptional performance remains a significant challenge. Herein, a novel approach was introduced to achieve the massive production of SiO2 nanofibers with lotus-leaf-inspired surfaces by combining solution blowing spinning (SBS) and the polymer-derived ceramics method. Based on the SBS technique, three types of precursor nanofiber products were fast spined with methyl silsesquioxane polymer and polymethyl hydrogen siloxane employed as Si sources. The flow rate of the SBS spined Si-based ceramic nanofibers was enhanced to 20 mL·h-1. Furthermore, through the integration of hydrophobic-oleophilic SiO2 nanoparticles into the precursor solution, SiO2 nanofibers with lotus-leaf nanoprotrusion surfaces were fabricated. Nanoparticle-decorated SiO2 fibers demonstrated excellent hydrophobicity (138.3°), compression resilience (∼60%), proficiency in organic pollutant adsorption, high-temperature resistance (∼1100 °C), and outstanding thermal insulation properties (thermal conductivity of 0.0165 W·(m·K)-1).

Supramolecular assembly of dual crosslinked nanocomposite polysaccharides hydrogel: Integration of injectable, self-healing, and pH-responsive platform for sustained delivery of polyphenols

This study introduces an innovative approach in the field of biomaterials through the development of a multifunctional, printable scaffold designed for the advanced delivery of polyphenols. Addressing challenges of burst-release, poor compounds solubility and bioavailability, we engineered a supramolecular-assembled dual crosslinked hydrogel combining fucoidan (F) and chitosan (CS) encapsulating nanoliposomes. The novel integration of dibenzaldehyde-terminated PEG (DB) within the hydrogel, created a synergistic crosslinking through the formation of the covalent Schiff base bonds and physical interactions which enhanced the hydrogel's overall characteristics. Tailoring F content (DBCS-F), allowed the crosslinking density modulation, yielding a robust gel network structure with enhanced mechanical properties, evidenced by a remarkable compressive stress resistance of 1.73 MPa at 60% strain, coupled with high compressive resilience (79.31% stress recovery after 6 cycles), surpassing single crosslinked hydrogel (DBCS). The rheological analysis further confirmed the hydrogel's improved viscoelasticity, stable network structure, and shear-thinning behavior, affirming its excellent injectability and suitability for 3D printing applications. Most notably, the incorporation of catechin/juglone-loaded nanoliposomes contributed to a pH-responsive sustained release of polyphenols in simulated gastrointestinal conditions. The developed dual crosslinked hydrogel, integrating injectability, self-healing, and pH-responsiveness presents a significant advancement in biomaterials and holds a promising approach for the fabrication of personalized 3D printed scaffolds aimed for sustained and targeted polyphenols release.

Interpreting compression resistance and resilience of spacer fabrics with morphological and mechanical changes of different polymeric spacer monofilaments

Customization of spacer fabrics to have the desired compression resistance and resilience is critical to promote their technical applications. The compression properties are mainly determined by the mechanical features of monofilaments used as spacer yarns. This study investigates the compression properties of spacer fabrics knitted with different polymeric monofilaments by analyzing their compression stress at 40% strain, residual strain, and energy absorption from cyclic compression tests. The monofilaments in the fabrics before and after cyclic compression were unraveled to test their tensile properties and morphologies for interpreting their different fabric compression properties. It was found that knitting monofilaments substantially alters their macroscopic and/or microscopic structures, thereby affecting the mechanical behavior of spacer monofilaments, and having different fabric structures and compression properties. Knitting polyethylene terephthalate monofilament damages the mesophase and induces a two-thirds decline in Young's modulus, while knitting polyamide 6 and polybutylene terephthalate monofilaments largely alters the macrostructures but maintains their good resilience. Spacer fabrics knitted with stiffer polyethylene terephthalate monofilaments have superior compression resistance but inferior compression resilience, while those knitted with softer and more resilient polyamide 6 and polybutylene terephthalate monofilaments have better compression resilience. Polyethylene monofilament is not suitable for spacer fabrics because of its low Young's modulus and poor tensile resilience. Polyethylene terephthalate spacer fabrics have the best compression resistance–resilience balance in terms of compression stress at 40% strain and residual strain in the fourth cycle required by the standard EN ISO 3386-1, while polyamide 6 and polybutylene terephthalate monofilaments are more suitable for long-term service due to their high compression resistance and resilience.

Elastic SiC Aerogel for Thermal Insulation: A Systematic Review.

SiC aerogels with their lightweight nature and exceptional thermal insulation properties have emerged as the most ideal materials for thermal protection in hypersonic vehicles; However, conventional SiC aerogels are prone to brittleness and mechanical degradation when exposed to complex loads such as shock and mechanical vibration. Hence, preserving the structural integrity of aerogels under the combined influence of thermal and mechanical external forces is crucial not only for stabling their thermal insulation performance but also for determining their practicality in harsh environments. This review focuses on the optimization of design based on the structure-performance of SiC aerogels, providing a comprehensive review of the inherent correlations among structural stability, mechanical properties, and insulation performance. First, the thermal transfer mechanism of aerogels from a microstructural perspective is studied, followed by the relationship between the building blocks of SiC aerogels (0D particles, 1D nanowires/nanofibers) and their compression performance (including compressive resilience, compressive strength, and fatigue resistance). Moreover, the strategy to improve the high-temperature oxidation resistance and insulation performance of SiC aerogels is explored. Lastly, the challenges and future breakthrough directions for SiC aerogels are presented.

Study of Road Performance and Curing Mechanism of Coal Gangue by Curing Agent

Abstract Coal gangue is a type of rock waste product with dark gray color during coal mining and washing. The curing agent stabilizes soils by improving their physico-mechanical properties, allowing the soils to be reused in engineering as the subgrade fill. This study investigates the impact of SAHP curing agent on road performance parameters of coal gangue. The results showed that the road performance parameters of coal gangue increase with the curing agent content. The compressive resilience modulus of 7 days and California bearing ratio of coal gangue with 0.2% curing agent meet the specifications. The scanning electron microscope reveals the presence of agglomerated gels and hexagonal prism crystals between coal gangue particles. The observed crystals are ettringite, and the gels are silicate gel (nSiO2·mH2O) formed by the reaction of Na2O·nSiO2 with CO2 and H2O, as determined by combined X-ray diffraction and energy spectrum analysis. The improved coal gangue by the curing agent can be utilized as subgrade fill, supporting the reuse of coal gangue in highway engineering.

Peanut shaped auxetic cementitious cellular composite (ACCC)

Auxetic cementitious cellular composites (ACCCs) exhibit desirable mechanical properties (e.g., high fracture resistance and energy dissipation), due to their unique deformation characteristics. In this study, a new type of cementitious auxetic material, referred to as peanut shaped ACCC, has been designed and subsequently architected using additive manufacturing techniques. Two peanut shaped ACCCs specimens with different pseudo-minor axes have been tested under uniaxial compression with Digital Image Correlation (DIC) to assess their compressive behavior, peak strength, Poisson’s ratio, and energy dissipation capacity. Additionally, cyclic tests were conducted to investigate their compressive resilience properties, further elucidated through microstructural analysis using a digital optical microscope. The mechanical test results were also compared with those of previously developed elliptical-shaped ACCCs. Furthermore, a numerical model was used to simulate the mechanical behavior of peanut shaped ACCCs under uniaxial compression, and showed a good agreement with the experimental data. The auxetic behavior observed in peanut shaped ACCCs arises from the rotation of sections facilitated by fiber bridging at the ligament of adjacent holes within the cementitious unit cell. In comparison to elliptical-shaped ACCCs, peanut shaped ACCCs can exhibit a slightly more negative Poisson's ratio and mitigate stress concentration. The reduction of stress concentration enables peanut shaped ACCCs to dissipate substantial energy, showcasing enhanced ductility and toughness. In cyclic tests, peanut shaped ACCCs exhibit superior recoverable deformation elasticity, attributed to robust fiber bridging capacity. The exceptional mechanical properties exhibited by peanut shaped ACCCs offer a scalable solution for developing energy-absorbent and multifunctional cementitious materials for smart infrastructure.

Biomimetic short fiber reinforced 3-dimensional scaffold for bone tissue regeneration

Bone defects caused by diseases and trauma are considered serious clinical challenges. Autologous and allogeneic transplantations are the most widely used methods to mitigate bone defects. However, transplantation poses risks such as secondary trauma, immune rejection, and disease transmission to patients. Preparing a biologically active bone tissue engineering scaffold as a bone substitute can overcome this problem. In the current study, a PLGA/gelatin (Gel) short fiber-reinforced composite three-dimensional (3D) scaffold was fabricated by electrospinning for bone tissue defect repair. A hybrid scaffold adding inorganic materials hydrotalcite (CaAl-LDH) and osteogenic factors deferoxamine (DFO) based on PLGA and Gel composite filaments was prepared. The structure, swelling, drug release, and compressive resilience performance of the 3D scaffolds in a wet state were characterized and the osteogenic effect of the crosslinked scaffold (C-DLPG) was also investigated. The scaffold has shown the optimum physicochemical attributes which still has 380 kPa stress after a 60% compression cycle and sustainedly released the drug for about twenty days. Moreover, a promising In vivo osteogenic performance was noted with better tissue organization. At 8 weeks after implantation, the C-DLPG scaffold could fill the bone defect site, and the new bone area reached 19 mm2. The 3D microfiber scaffold, in this study, is expected to be a promising candidate for the treatment of bone defects in the future.

A Comparative In Vitro Analysis of Antimicrobial Effectiveness and Compressive Resilience in Chirata and Terminalia arjuna Modified Glass Ionomer Cement.

Glass ionomer cements are commonly utilized in dental restorations due to their biocompatibility, strong chemical bond with dental tissues, and ability to resist tooth decay. However, their effectiveness can be compromised by the presence of persistent cavity-causing microorganisms. Therefore, it is essential to consider incorporating antibacterial agents into these restorative materials. Swertia chirayita (S. chirayita) and Terminalia arjuna (T. arjuna) are well-known for their rich composition of phytochemicals that can potentially inhibit the growth of bacteria. Hence, the current research is focused on modifying glass ionomer cement with Chirayita and T. arjuna extracts to enhance its antibacterial properties. This research aims to determine the antimicrobial efficacy and compressive strength of glass ionomer cement modified with Chirayita and T. arjuna extracts. Plant extracts were prepared from both Chirayita and T. arjuna. The powder and liquid components of conventional glass ionomer cement (GIC) were mixed, followed by adding these extracts at three different concentrations. To assess antimicrobial properties, typical strains of Streptococcus mutans and Lactobacillus were employed to test both the modified GIC and unmodified GIC (used as a control). For Chirayita and T. arjuna-modified GIC, minimum inhibitory concentration (MIC) assays were conducted at three different concentrations. MIC was assessed at various time intervals ranging from 1 to 4 hours for modified and unmodified groups. Moreover, compressive strength was measured using cylindrical molds. The highest force exerted at the point of specimen fracture was recorded to calculate the compressive strength values in megapascal (MPa). The antimicrobial efficiency of Chirata and T. arjuna-modified GIC was evaluated using a MIC assay, indicating a statistically significant enhancement in antimicrobial potency against S. mutans and Lactobacillus within the modified groups in contrast to the control group (p<0.05). However, there were no notable changes in compressive strength when comparing the control group to the modified groups (p>0.05). The antimicrobial effectiveness against S. mutans was observed to be greater in both T. arjuna and Chirayita-modified GIC. In the case of Lactobacillus, Chirayita-modified GIC exhibited more pronounced antimicrobial properties compared to T. arjuna. Importantly, both extracts did not alter the compressive strength of Conventional (unmodified) GIC. Hence, Chirayita-modified GIC appears to be a promising restorative material for combatting recurrent caries. Additional investigation is required to assess the material's stability over an extended period.

A lightweight porous shear stiffening composite foam with excellent mechanical–thermal coupling protection performance

Lightweight SSE-EVA foam (SEF) with excellent compression resilience and mechanical-thermal protection was prepared by foaming. It owned application potential in thermal camouflage and thermal storage materials.

Efficient thermal insulation through all-biomass silk fibroin composite aerogel 3D-reinforced by natural down-fiber

Biomass-based aerogels offer numerous individual benefits in thermal insulation applications. However, their generally weak mechanical properties impair the further development of aerogels. Herein, natural down-fiber (DF) reinforced silk fibroin (SF) all-biomass aerogel was rationally designed. The developed 3D-reinforcement structure, in which DF was physically interspersed in SF in multiple directions and hydrogen bonds formed between DF and SF, resulted in significantly enhanced compression stress of 146.3 kPa (3.44 times greater than that of SF aerogel, which attained 42.57 kPa) and impressive compression resilience. Meanwhile, the DF@SF aerogel displayed a hierarchical porous structure (97.64 % porosity) with micron-sized holes and nano-sized pores, as well as low thermal conductivity of 0.034 W m−1 K−1, which would effectively inhibit air circulation and limit heat transfer for improved thermal insulation. Moreover, the addition of DF reduced the average hole diameter, which further prevented heat convection and minimized heat radiation inside the aerogel. As a result, the DF@SF aerogel demonstrated excellent thermal insulation performance with a wide range of working temperatures from −40 to 160 °C and stability for recyclable usage. Therefore, this all-biomass DF@SF aerogel could offer an alternative form of high-performance thermal insulation. This strategy will also inspire more research into the construction of 3D-reinforced functional aerogels and their applications in thermal insulation, sound insulation, biomedicine, and other related areas.

Thermoplastic polyurethane foams derived from cellulose nanofibril/carbon nanotube/(Fe/C) aerogels for efficient electromagnetic interference shielding

The electromagnetic interference (EMI) shielding performance of a material can be enhanced by combining carbon and magnetic components to make the material simultaneously conductive and magnetic. In this work, a series of cellulose nanofibril (CNF)/carbon nanotube (CNT)/(Fe/C)/thermoplastic polyurethane (TPU) foams are fabricated by preforming CNF/CNT/(Fe/C) aerogels followed by combing TPU to improve the mechanical property, where Fe/C is derived from Prussian blue (PB, Fe4[Fe(CN)6]3) after pyrolysis. Consequently, the obtained aerogels and foams display electrical conductivity and magnetism. The CNF/CNT/(Fe/C)/TPU foam reaches a high EMI shielding effectiveness value of 42.2 dB at a thickness of 2 mm when the mass ratio of PB and CNT is 5:1 and the pyrolysis temperature is 650 ℃. Furthermore, the CNF/CNT/(Fe/C)/TPU foam exhibits compression resilience and hydrophobicity. This study is expected to provide a feasible strategy to acquire absorption-dominated EMI shielding materials by imparting conductivity, magnetism and porous structures to the material.

Imine-vitrimer elastomer enabled triboelectric nanogenerators with remarkable electrical output and circular life cycles

Triboelectric nanogenerator (TENG) has garnered significant attention as a promising technology for energy harvesters and flexible electronics. However, the current state-of-the-art TENGs suffer from the low electrical output and limited lifespan, which pose significant obstacles to their broader implementation. Therefore, a TENG with ultra-high electrical output and circular life cycles is developed by combining dynamic covalent chemistry and TENG technologies. Specifically, imine-vitrimer elastomers (IVEs) with excellent compression resilience are synthesized and utilized to fabricate TENG as an electronegative tribolayer. The assembled TENG can generate ∼18-fold higher electrical charge density than traditional PTFE-based TENG. This substantial improvement enables the TENG to power over 2400 commercial LEDs, showcasing the great potential for high-sensitivity traffic sensors and energy intensive devices. Moreover, to solve inevitable wear or tear of the tribolayers during mechanical friction, efficient self-healing and recycling of the tribolayer are achieved, ensuring consistently high electrical output and durability. This study provides a new sight to fabricate the next generation TENG with high performance and circular life cycles.

Mechanics and road performance of mudstone modified stabilized gravel subgrade in arid desert areas

This study investigates the feasibility of using mudstone to enhance poorly graded gravel in certain arid regions of the S21 Altay-Urumqi Highway project in Xinjiang. Despite mudstone typically being considered a poor-quality rock, its combination with higher-performance materials like cement, lime, and fly ash can stabilize expansive soils for use as roadbed fill. In the experiments, 30% and 40% mudstone were added to the gravel mixture. The experiments were compared with unmodified K80 and 35% crushed rock mixes. The findings reveal that adding 30% mudstone substantially increased the California Bearing Ratio (CBR) of the gravel mix by over 20%. However, excessive mudstone inclusion could weaken load-bearing capacity. Moreover, mudstone-modified specimens exhibited superior unconfined compressive strength (UCS), splitting strength, compressive resilience modulus (CRM), drying shrinkage resistance, and temperature shrinkage resistance. Under optimum cement dosage, the UCS of mudstone-modified specimens outperformed unmodified specimens, consistently surpassing fly ash-altered groups. Although mixed fly ash initially exhibited lower strength, it gradually approached cement-stabilized strength with an extended curing time. Incorporating crushed stone into the grading curve significantly increased splitting strength due to its high strength and hardness. In contrast, adding mudstone introduced a notable proportion of fine aggregates, resulting in a looser grading skeleton prone to early cracking. This research demonstrates that mudstone enhancement significantly improves roadbed performance, including increased CBR, splitting strength, and crack resistance. The use of mudstone in arid desert areas enhances overall performance while reducing shrinkage coefficients. The suggested approach for semi-rigid pavements in arid deserts recommends specific mineral proportions, various aggregate sizes, an appropriate amount of cement, and 30% mudstone to create dense structures with a higher quantity of coarse aggregate.

Tissue‐derived highly compressible anisotropic carbon aerogels with aligned fibrous matrices for solid‐state rechargeable zinc‐cobalt‐air hybrid batteries

AbstractThe rising demand for wearable zinc‐air batteries encounters challenges in balancing electrochemical performance and mechanical resilience. Elastic carbon aerogels in air cathodes necessitate a metal content constraint of less than 3 wt.%, adversely impacting catalytic activity optimization. This study presents a novel fabrication method for fibrous carbon aerogels with high compressive resilience and extraordinary catalytic performance. An external layer of graphene shells and carbon nanotubes integrated onto the fibrous carbon matrix mitigates metallic species diffusion. This confinement ensures exceptional bi‐catalytic activity for oxygen‐involved redox reactions without compromising ultra‐elasticity. With high cobalt content in the aerogel cathode, it exhibits minimal voltage gaps during charge–discharge cycles, showcasing unique zinc‐cobalt‐air hybrid battery characteristics. It sustains exceptional elasticity in repeated testing, achieving approximately 79.2% round‐trip efficiency over a 60‐h cycle test, underscoring its potential as a wearable energy storage device.image

Enhancing flame retardancy, mechanical durability, and anti-aging property of polyurethane foam via novel cyclic phosphonate

Incorporating flame retardants (FRs) is an essential way to enhance flame resistance of polymers. In an effort to obtain required flame retardancy, a large number of flame retardants are often needed, which inevitably deteriorate the mechanical properties, especially suffering from heat aging. To balance the flame retardancy and mechanical performance, herein, we designed and synthesized a cyclic phosphonate, denoted as TCDP, with high phosphorus content (20.1 %) for flexible polyurethane foam (FPUF). Notably, only 2.8 wt% TCDP addition can endow FPUF with self-extinguishing behavior when it is horizontally or vertically exposed to the flame for 10 s. High limiting oxygen index (LOI) of 26 % can be reached for the 12.6 wt% TCDP filled FPUF. In particular, the compression strength and resilience of the resulting FPUFs remain robust even under heat aging at 125 °C for 16 h, resulting from an energy dissipating network may be established by hydrogen bonding between the cyclic phosphonate and polyurethane. Additionally, the TCDP filled FPUFs exhibit an LOI loss of only 0.5 % after heat aging. This work presents a new strategy to do not sacrifice the mechanical properties even under heat aging but impart excellent flame retardancy to flammable polymers.

Bamboo Inspired Silicon Anodes with Ultrahigh Initial Coulombic Efficiency and High Capacity for the Li-Ion Batteries.

Silicon is regarded as the most promising candidate due to its ultrahigh theoretical energy density (4200mAhg-1). However, the large volume expansion of silicon nanoparticles would result in the destruction of electrodes and a shortened cycle lifetime. Here, inspired by the natural structure of bamboo, the silicon anode with vascular bundle-like structure is proposed to improve the electrochemical performance for the first time. The dense channel wall in the silicon anode can accommodate the volume change of silicon nanoparticles and the transport of ions and electrons is also enhanced. The obtained silicon anodes display excellent mechanical properties (50% compression resilience and the average peel force of 4.34N) and good wettability. What more, the silicon anodes exhibit high initial coulombic efficiency (94.5%), excellent cycle stability (2100mAhg-1 after 300 cycles) which stands out among the silicon anodes. Specially, the silicon anode with impressive areal capacity of 36.36mAhcm-2 and initial coulombic efficiency of 84% is also achieved. This work offers a novel and efficient strategy for the preparation of the flexible electrodes with outstanding performance.

Study on Intercalated Melt-blown Nonwovens Based on Product Performance Control Mechanism

There are many factors affecting the preparation of intercalation melt-blown nonwovens, and scientists are committed to studying the conditions required for optimal product performance. Therefore, in order to study the optimal conditions, this paper first uses multiple linear regression to explore the correlation between intercalation rate and the change rule. It is found that intercalation rate is related to the change rule of thickness and filtration resistance, but has nothing to do with other indicators. In order to explore the relationship between process parameters and structure variables, a multi-layer perceptron (BP neural network) model with process parameters as input and structure variables as output is established. The relationship between input and output is obtained by using the trained network and the functional relationship is calculated. By analyzing the function, it is found that the correlation between the receiving distance and thickness and porosity is stronger than the positive correlation between the hot air speed and the compression resilience is stronger than the negative correlation between the hot air speed. The correlation between hot air velocity and thickness and porosity is weaker than that of receiving distance, and the correlation between hot air velocity and compressive resilience is weaker than that of receiving distance.